Back scratcher



FIG. 1 is a overall perspective view of a back scratcher showing my design;

FIG. 2 is the bottom plan view thereof.

FIG. 3 is the right side elevational view thereof, the side opposite being a mirror image of the side depicted in FIG. 3.

FIG. 4 is the top plan view thereof;

FIG. 5 is the front view thereof; and,

FIG. 6 is the rear view thereof. 

The ornamental design for a back scratcher, substantially as shown and described. 